Primary tabs

After decades of service, wastewater collection facilities commonly experience excessive infiltration/inflow and sanitary sewer overflows (SSOs). To encourage municipalities to address these problems, the State of Tennessee issues moratoria against new construction pending the implementation of corrective measures. Fayetteville Public Utilities retained CTI Engineers to plan and help implement an ambitious program which would remove its moratorium.

Laten Bottom Sewer Rehabilitation

Flow monitoring, smoke testing, and video inspection confirmed the presence of excessive infiltration/inflow in older parts of the FPU system. CTI designed corrective measures and prepared a plan to address the most serious problems in the first phase of the rehabilitation program.

One of the first problems addressed is the leak shown in photo below. The leak was not accessible for conventional repair as it was located under two storm water culverts and a major highway. A cured-in-place liner was the most cost-effective solution and succeeded in eliminating the leak.

Flintstone Subdivision Sewer System Replacement

The gravity sewer for a 33-unit housing development, constructed by the U.S. Air Force, failed completely. After evaluating a number of alternatives, the entire system was replaced with a Septic Tank Effluent Pump (STEP) collection system. Project utilized existing low-pressure sewer transmission line.

In-Plant and Remote SCADA Design

The First Utility District of Hawkins County (the District) is the primary water provider for the cities of Church Hill and Mt. Carmel and surrounding rural areas, serving a population of over 17,000 in northeast Tennessee. The District selected CTI to design its new membrane filtration water treatment plant (WTP) and to design and oversee the implementation of both the in-plant SCADA and the system-wide SCADA.

Membrane Water Plant

For over 40 years, the First Utility District of Hawkins County has served the City of Church Hill and surrounding areas in upper east Tennessee. During that time, new service areas have been added and regulations governing treatment have become increasingly stringent. According to General Manager Allen Jones, these factors made it difficult for the District’s existing plants to be in regulatory compliance and to meet demand, especially in periods of insufficient rain.

High Service Transmission Main - Contract 3

The project consists of the installation of approximately 2,300 linear feet of 24-inch ductile iron water main, approximately 4,700 linear feet of 18-inch ductile iron water main, two bore and jack highway crossings, one bore and jack railroad crossing, valves, hydrants, and appurtenances.

Long Street Landfill Closure / Fed Ex Package Handling Facility

Long Street Landfill Closure – CTI assisted in the closure of an 18-acre foundry sand landfill site formerly owned by Wheland Foundry, including solid waste permit modification, capping a 3-acre dust cell in the northern portion of the site, grading, and stabilizing the remaining 15-acres of the site.

Englewood Alternative Water Source Study

CTI was retained to determine the most cost-effective source of additional water for the Town of Englewood after the Town was notified by TDEC that its water treatment plant could not continue to operate at 100 percent capacity. The study looked at four potential resources for the Town:
• Developing additional capacity at the water treatment plant
• Purchasing water from Etowah, TN
• Purchasing water from Athens, TN
• Purchasing water from Hiwassee Utilities Commission